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2. Pressure switch - Wikipedia

   en.wikipedia.org/wiki/Pressure_switch

   Switch a household well water pump automatically when water is drawn from the pressure tank. Switching off an electrically driven gas compressor when a set pressure is achieved in the reservoir Switching off a gas compressor, whenever there is no feed in the suction stage.

3. Dry running protection - Wikipedia

   en.wikipedia.org/wiki/Dry_running_protection

   There are three different methods for detection of water shortage: Pressure switch on suction manifold or float switch/electrode relay in the supply tank: Dry-running protection with pressure/level switch. Measurement of inlet pressure in the suction manifold by means of an analogue pressure transmitter: Dry-running protection with pressure ...

4. Pressure tank - Wikipedia

   en.wikipedia.org/wiki/Pressure_tank

   The pressure switch turns the water pump on when it senses a pressure that is less than P lo and turns it off when it senses a pressure greater than P hi. While the pump is on, the pressure tank fills up. The pressure tank is then depleted as it supplies water in the specified pressure range to prevent "short-cycling", in which the pump tries ...

5. Pump - Wikipedia

   en.wikipedia.org/wiki/Pump

   The total pressure may have gravitational, static pressure and kinetic energy components; i.e. energy is distributed between change in the fluid's gravitational potential energy (going up or down hill), change in velocity, or change in static pressure. η is the pump efficiency, and may be given by the manufacturer's information, such as in the ...

6. Pressure measurement - Wikipedia

   en.wikipedia.org/wiki/Pressure_measurement

   Some pressure sensors are pressure switches, which turn on or off at a particular pressure. For example, a water pump can be controlled by a pressure switch so that it starts when water is released from the system, reducing the pressure in a reservoir. Pressure range, sensitivity, dynamic response and cost all vary by several orders of ...

7. Float switch - Wikipedia

   en.wikipedia.org/wiki/Float_switch

   A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.